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import scala.*;
class J_1 {
scala.collection.mutable.HashMap<String, String> map =
new scala.collection.mutable.HashMap<String, String>();
Function1<Tuple2<String, String>, Integer> f =
new scala.runtime.AbstractFunction1<Tuple2<String, String>, Integer>() {
public Integer apply(Tuple2<String, String> s) {
return s._1().length();
}
};
scala.collection.Seq<Integer> counts =
map.groupBy(f).keys().toList();
}
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